Mining-machine.



No. 660,434. Patented Oct. 23, I900. J. HERZLER; H. HENNINGER & W. FENNER.

- -MININ G MACHINE.

(Application filed Apr. 21, 1900.) (N0 M -J 2 Sheets-Sheet l.

THE NORRIS PErEn do. PnaTou'mu. WASHINGTON. b. c.

No. 660,434. Patentd Oct. 23, moo. J. HERZLER, H HENNINGER &. W; FENNEB.-

' MI NINGMAGHINE.

. (Application filed Apr. 21, 1960. Model) 2 Sheets8heet 2.

UNITED STATES PATENT OFFICE.

JOHN HERZLER, HENRY HENNINGER, AND WILLIAM FENNER, OF BELLE- VILLE, ILLINOIS.

MINING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 660,434. dated October 23, 1900.

Application filed April 21, 1900. Serial No. 13,679. (No model.)

To aZZ whom it may concern:

Be it known that we,JoHN HERZLER, HENRY HENNINGER, and WILLIAM FENNER, citizens of the United States, and residents of Belleville, in the county of St. Clair and State of Illinois, have invented certain new and useful Improvements in Mining-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Our invention relates to that character of mining-machines in which the pick or drill is carried by the piston-rod of an engine that is driven by compressed air.

Our invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a top or plan view of our improved machine. Fig. II is a longitudinal sectional view taken on the line II II, Fig. I. Fig. III is an enlarged horizontal sectional View taken on the line III III, Fig. II, through the valve-operating engine. Fig. IV is an enlarged vertical sectional view taken on the line IV IV, Fig. III, through the valve-chest of the valve-operating engine. Fig. V is an enlarged vertical sectional view taken on the line V V, Fig. II. Fig. VI is a Vertical sectional view taken on the line'VI VI, Fig. III, through the valve-operating engine. Fig. VII is a detail perspective view of the bushing located in the outer end of the piston-rod sleeve. Fig. VIII is an enlarged detail side view of the outer end of the piston-rod sleeve.

Fig. IX is a cross-sectional view taken on the line IX IX, Fig. VIII.

The machine is mounted on the usual ground-wheels 1, that are connected to the cylinder 2 by the spindles 3, the heads of the spindles being seated in socket-slots t at the sides of the cylinder. (See Fig. V.)

5 designates the piston that operates in the cylinder 2 and carries the piston-rod 6. The outer end 7 of the piston-rod is non-circular in cross-section and operates through a sleeve 8. The outer end of the sleeve 8 is split, as seen in Figs. VIII and IX, and contains feeve may be clamped to a bushing 10, d therein. The bushing is provided ,lng-bolts 9 by which the outer end of with an aperture 11, of corresponding shape to the outer end 7 of the piston-rod, and serves as a bearing for the piston in its reciprocation. Projecting from the bushing 10 are ribs 12, that contain notches 13, which receive the clamping-bolts 9, that retain the bushing from displacement.

14 designates an air-conducting pipe that leads from a suitable source of compressed- -air supply to the inlet 15 in the cylinder 15 of the valve-operating engine. The cylinder 15 is provided with communication to the interior of the main cylinder 2.

16 designates a double-ended piston, located in the cylinder 15 and adapted for reciprocation therein. The two ends of the piston 16 are connected by webs 17 and 19,

the web 17 containing a port 18, adapted to move into registration with the inlet 15 to permit the passage of air from the pipe 14 into the interior of the cylinder 15, and the web 19 having an aperture that permits the passage of air from the space between the ends of the piston 16 into a chamber 20, located beneath the cylinder 15. (See Figs. II, V, and VI.) The piston 16is operated in the manner hereinafter explained.

Leading through the upper wall of the cylinder 2 from the chamber 20 to the interior of the cylinder 2 are ducts 21 and 22, through which the air may pass to the chamber of the cylinder 2. 23 are exhaust ducts leading from the chamber 20. The ducts 21, 22, and 23am controlled by a slide-valve24, located in the chamber 20' and having connection with the piston 16, so that any movement of said piston is imparted to said slide-valve, and when the valve is in one position air is permitted to pass from the chamber 20 through one of the ducts 21 or 23 into the chamber of the'cylinder 2, while it exhausts through the other duct into the adjacent exhaust-duct 23 to the exterior of the machine, as is usual in machines of this class. Gommunicating with the duct 21 is a port 25, that leads to an apertured valve-seat 26 in a chamber containing a ball-valve 27, backed by a spring 28, and leading from the chamber in which the valve 27- is located is aduct 29, that communicates with the rear end of the chamber of the cylinder 2. By this arrangement when the piston 5 is in its rear position the air passes from the chamber into the duct- 21 and therefrom through the port 25 into the chamber containing the ballvalve 27 and forces the valve from its seat; thereby permitting it to pass through the duct. 29 into the rear end of the cylinder-chamber and exertits force against the rear end of the piston 5 to start said piston. After the piston has been started and has passed the duct 21, the air passes directly into the cylinder-chamber from said duct 21 and exerts its force against the piston and completes the stroke thereof. The duct 22 has com munication with a duct 30, that leads to an apertu red valve-seat 31, that receives a ball-valve 32. Leading from the chamber containing the valve 32 is a duct 34, that communicates with the forward end of the chamber of the cylinder 2. In the backward stroke of the piston 5 the air first passes through the duct 30 to the duct 34, past the valve 32, and into the cylinder-chamber in the same manner as that described in connection with the forward stroke of. the piston, and after the piston has passed the duct 22 theair passes directly into the cylinder-chamber from the duct 22. The valve-balls 27 and 32 are preferably of rubber in order that they may be compressed under the action of the springs 28 and 33 into close contact with the valveseats 26 and 31.

Located beside the cylinder 15 is a valvehonsing 35.

36 designates a crank-shaft mounted in bearings in the cylinder 15 and provided with a flywheel 37. The crank-shaft 36 has connected to itone end of a pitman 38, that at its opposite end is connected to the piston 16. (See Fig. II.) Leading from the chamber 20 is a duct 39 (see Figs. IV and VI) to a duct 40 in the wall of the valve-housing 35. The duct 40 is controlled by a throttle-valve 41. (See Fig. IV.) The air is thereby permitted to pass from the chamber 20 into the duct 40 and therefrom into a valve-chamber 42. (See Fig. IV.) In the valve'chamber42 is a slide-valve 43, carried by a valve-rod 44, that extends into a chamber 45, separated from the valve-chamber 42. The valve-rod 44 is joined to the crank-shaft 36 by a connection 46, that engages a wrist-pin 36, carried by the crankshaft. Leading from the valve-chamber 42 are ducts 4'7 and 48, that open into the ends of the chamber of the cylinder 15. Leading from the valve-chamber 42 is an exhaust-duct 49. The air entering the valve-chalnber 42 passes through either of the ducts 47 or 48 that is uncovered by the valve 42 and operates against the piston 16, while the air in front of the other end of the piston is being exhausted through the duct covered by the valve and passes out through the exhaustduct 49, andon the completion of the stroke of the piston 16 the valve 43is moved to cover the previously-exposed duct 47 or 48 and permit the air to pass from the valve-chamber to the previously exhaust end of the cylinder and therefore eitert force against the pistori to drive it in a reverse direction, the valve being shifted each time by reason of the connection between it and the crank-shaft 36, which is in turn connected to the piston by the pitman 38.

In the practical use of this machine the air enters the cylinder 15 from the pipe 14, and on the port 18 coming into registration with said inlet the air passes through said port.

into the interior of the piston 16 and therefrom into the chamber 20 to pass to the interior of the cylinder 2 through the ducts and ports in the manner hereinbefore described. Each time that the port 18 leaves the inlet 15 the airis out 01f from entrance into the cylinder 15 and operates expansively in the machine, thereby affecting a saving in the amount of air used. The air passing through the ducts 39 and 40 to the valve-chamber 42 and therefrom to the ends of the cylinder 15 in alternation drives the double-headed piston 16 in reciprocation to open and close the passage-way from the inlet 15 through the port 18, the flow of air from the valve-chamber 42 being controlled by the valve 43, actuated in the manner described.

The machine herein described is of simple and durable constructionand economical in the amount of air required to operate it. The piston 16 and coexisting parts form a regulator for controlling the admission of air to the main cylinder, and the operation of this regulating -piston may be so controlled by manipulating the throttle-valve 41 as to admit the air to the machine at infrequent or frequent intervals, according to the rapidity with which the cylinder 16 is operated. For this reason the machine may be operated so as to strike a long heavy blow or a quick light blow, according to the desires of the operator. The construction of the machine permits of its being easily balanced for any duty, the only requirement necessary to change the balance being to loosen the nuts of the spindles 3 and slip the heads of said spindles in the desired direction in the slot 4 occupied thereby. This manner of changing the balance of the machine obviates the necessity of hanging cumbersome weights on the machine, as is frequently done in other machines of the same character.

On the interior of the cylinder 2 are annular pocket-grooves 2" (see' Fig. II) coinciding with the ducts 21 and 22. These pocketgrooves are designed for the reception of oil to lubricate the piston 5. The oil is fed into the machine through openings in the top thereof, closed by plugs 50. (See Figs. I and V.) Asnitable supply of oil, beingintroduced into the machine, passes downwardly therethrough until it reaches the annular pocketgrooves 2, in which it is contained to continuously supply lubricant to the piston 5.

The rear end of the sleeve 8 forms the, head of.the cylinder 2, and it is provided with r ings 8 through its Wall, through which i sorted the gland 51, that bears against packing 52 within the sleeve, and thus a stuffing-box is provided for the forward end of the cylinder 2.

The air supplied to the auxiliary valvechamber is sufficient to complete the stroke of the piston in the machine, inasmuch as the auxiliary cylinder serves as a receiver for the air that is admitted, and the quantity of air so received is of an adequate amount in View of the expansion thereof.

We claim as our invention 1. In a mining-machine, the combination with the main cylinder, of a piston and rod operating therein, a valve-operating enginecylinder having communication With said main cylinder and having connection with a source of air-supply, a slide-valve arranged .to control the communication between said main cylinder and having connection with a source of air-supply, a slide-valve arranged to control the communication between said cylinders, a double-headed piston located in said valve-operating engine-cylinder and connected with said slide-valve, said doubleheaded piston being provided with a port adapted to register with the inlet from said source of air-supply a valve for controlling the inlet of air to said valve-operating en ginecylinder, and means connected to said doubleheaded piston arranged to operate said controlling-valve, substantially as described.

3. In a mining-machine, the combination with the cylinder and piston therein of a piston-rod carried by said piston, a sleeve having a split outer end and in which said piston-rod operates, and a bushing located in said outer end of the sleeve, said bushing comprising a single member provided with ribs containing notches, and bolts arranged in said sleeve at the location of said notches, substantially as described.

JOHN I-IERZLER. HENRY HENNINGER. WM. FENNER. In presence of WM. MUELLER, OTTO FISCHER. 

